I know there some smart people here so lets discuss this ...this is what i know ..got a custom dyno tune with 18/42 gearing 94 degree day A/F 11.5 @WOT Speedo is dead on ...rode bike for 2 weeks with this set-up ...everything perfect except clutch couldn't handle all the gearing on the big end ..thats another issue ..don't think on that issue that only told me i need a lock-up .. so today i made a gearing change 17/45 big change ..went out and rode bike 70 degree day and bingo A/F IS 10.0 @WOT got a shudder and speedo is off around 15% faster .. got a multi map switch and i switch to a leaner map and bingo corrected..

NOW THAT LEAVES ME CONVIENCED THAT GEARING OR SPEEDO CHANGES THE MAPPING OR how the fuel is scaled thru the rpm

HUB you all over this

I would [have to agree with you there, bad] and I think the different spin at the tire to GPS [gear you are in] could effect that 11:1 to 10:1. The bad news is to un-loop the GPS, but that will lag you on the a-N side. That is why the hack or to cutout the gear input will slow you down on the top end. You got TRE'd on the other side of the 1320/1000 footear...

I have no clue but to assume the gear ratio changed the crank spin and that might be the fuel/ratio change was feeding that input to the GPS [a different gear to set the crank spinning at a different speed is like the middleman trim].

Now, what happens with the GPS out of the loop and in code(s)<Pick? There is where I would re-ride a 10/20 minute window and see what fuel trim changed if any through the GPS [out of the loop(s)< Remember there are two]. Now, I'd be working that second map and toggle to the trim that way. Because, it sure looks rpm to rear wheel related being the speed sensor knows if the back wheel is spinning as if no road existed between crank and rear wheel ratios. Without reading the blueprints inside the ECU/Spark Box, it could even be the speed sensor too.

Clutch wise: If you tried the washers behind the OEM clutch springs; if you used heavy duty aftermarket springs; if both of those do not keep the wheel from slipping plates, then that lockup is one more power transfer unit to the ground it take$ = I'm not telling you anything new.

Sorry, I could not answer you there, 1bad. All I can do is send you out to R&D the speed/gps to see if those two are the cause and effect or it is just the crank to TPS (throttle position sensor) and the code play in the redundant. Shit!

oh no hub ..i don't need help fixing it ..cause all i've got to do is bump the fuel map down OR i use my 3 sided nut which will drop speedo 25% ..i'm just stating i know gearing effects a/f .. i know it for a fact now .. yes i've got washers 3 in fact can't remember the mic thickness off hand ..all was good until i added more HP OR TQ ..

i've just got too much power

you know i can under stand gearing changing a/f at cruiseing speeds cause it will change rpm .. but at WOT that just amazing cause your thru the rpm range so fast under boost

* Last updated by: Badzx14r on 5/30/2009 @ 9:39 AM *

OH... Wait. You know how fast that crank is in the calc being in the safe zone so fast on the blade speed? You slick dick you.

Slow? You catching dishit?

Slow? You catching dishit?

its flowing right over his head .. thats why he's call slow ..

there is no doubt about .. gearing changes A/F after todays discovery